摘要
首先通过理论计算出温度与电磁超声换能器和待测件结构物理参数的关系,分析了温度对Lamb波在板内传播时的衰减和波速的影响,并总结出了数学模型。其次,通过有限元仿真定量分析了电磁超声换能器接收的Lamb波信号随温度的变化情况,为缺陷的准确定位和定量提供了参考依据。
Firstly,the relationship between temperature and the physical parameters of the electromagnetic acoustic transducer and the tested component structure was theoretically calculated.The influence of temperature on the attenuation and velocity of Lamb waves propagating in the plate was analyzed,and the mathematical model was summarized.Secondly,the variation of Lamb wave signals received by electromagnetic acoustic transducers with temperature was quantitatively analyzed through finite element simulation,providing a reference basis for accurate localization and quantification of defects.
作者
何慧敏
李松松
高明阳
王子君
李虎
郭中会
HE Huimin;LI Songsong;GAO Mingyang;WANG Zijun;LI Hu;GUO Zhonghui(School of Information Engineering,Dalian Ocean University,Dalian 116023,China)
出处
《无损检测》
CAS
2023年第5期23-27,共5页
Nondestructive Testing
基金
国家自然科学基金资助项目(51778104)
辽宁省教育厅科学研究项目(DL202005)
辽宁省渔业厅资助项目(201723)。
关键词
电磁超声换能器
温度
物理参数
有限元仿真
electromagnetic acoustic transucer
temperature
physical parameter
finite element simulation
